Guitar headstock



FIG. 1 is a front view of a design for a guitar headstock.

FIG. 2 is a right side view of a design for a guitar headstock.

FIG. 3 is a bottom perspective view of a design for a guitar headstock.

FIG. 4 is a back view of a design for a guitar headstock.

FIG. 5 is a left side view of a design for a guitar headstock.

FIG. 6 is a top perspective view of a design for a guitar headstock.

FIG. 7 is a right side perspective view of a design for a guitar headstock; and,

FIG. 8 is a bottom perspective view of a design for a guitar headstock.

The broken lines shown throughout the views represent the portions of the guitar headstock, which form no part of the claimed design. 

CLAIM The ornamental design for a guitar headstock, as shown and described. 